package com.ftqh.core.jpa.repository.support;

import com.ftqh.core.jpa.repository.BaseRepositoryImpl;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.support.JpaRepositoryFactory;
import org.springframework.data.jpa.repository.support.JpaRepositoryFactoryBean;
import org.springframework.data.jpa.repository.support.SimpleJpaRepository;
import org.springframework.data.repository.core.RepositoryInformation;
import org.springframework.data.repository.core.RepositoryMetadata;
import org.springframework.data.repository.core.support.RepositoryFactorySupport;

import javax.persistence.EntityManager;
import java.io.Serializable;

public class BaseRepositoryFactoryBean<T extends JpaRepository<S, ID>, S, ID extends Serializable>
		extends JpaRepositoryFactoryBean<T, S, ID> {

	@Override
	protected RepositoryFactorySupport createRepositoryFactory(EntityManager entityManager) {
		return new BaseRepositoryFactory(entityManager);
	}

	private static class BaseRepositoryFactory extends JpaRepositoryFactory {

		public BaseRepositoryFactory(EntityManager entityManager) {
			super(entityManager);
		}

		@Override
		@SuppressWarnings({"unchecked"})
		protected <T, ID extends Serializable> SimpleJpaRepository<?, ?> getTargetRepository(
                RepositoryInformation information, EntityManager entityManager) {
			return new BaseRepositoryImpl<T, ID>((Class<T>) information.getDomainType(), entityManager);

		}

		@Override
		protected Class<?> getRepositoryBaseClass(RepositoryMetadata metadata) {
			return BaseRepositoryImpl.class;
		}
	}
}